/*
 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */

package software.amazon.awssdk.core.internal.http.loader;

import java.util.Optional;
import software.amazon.awssdk.annotations.SdkInternalApi;

/**
 * Interface to load an HTTP service binding from the environment/classpath.
 *
 * @param <T> Type of service binding being loaded.
 */
@SdkInternalApi
interface SdkHttpServiceProvider<T> {

    /**
     * @return Empty {@link Optional} if service can't be loaded, otherwise fulfilled {@link Optional} containing service
     * instance.
     */
    Optional<T> loadService();
}
